CVE-2026-81780
WordPress Hash Form plugin <= 1.4.2 - Arbitrary File Upload vulnerability
Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
WordPress Hash Form plugin <= 1.4.2 - Arbitrary File Upload vulnerability
Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.
- Record
CVE-2026-81780- CVSS 3.1
- 10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-434
- Updated
- 2026-11-02
EUVDEUVD-2026-68792
Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.
- Record
EUVD-2026-68792- CVSS 3.1
- 10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-chvv-mh28-xhg5
Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.
Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.
- Record
GHSA-chvv-mh28-xhg5- CVSS 3.1
- 10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-434
- Updated
- 2026-11-02
NVD
Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.
- Record
CVE-2026-81780- CVSS 3.1
- 10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-434
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | 0xCyp1337/CVE-2026-81780 | 2026-10-07 |
| PoC in GitHub | 0xTerror/CVE-2026-81780-Hash-Form | 2026-09-07 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-81780 is a critical vulnerability (CVSS 10.0) in Hashthemes Hash Form, published August 31, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. No source names a fixed version.